EARNINGS PER COMMON SHARE - Anti-dilutive Securities (Details) - shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	697,084	366,900
Stock Options
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	467,947	215,200
Convertible Preferred D Shares
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities		151,700
Time Vesting Units
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	168,962
Financial Performance Units
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	16,345
Restricted Stock Awards
EARNINGS (LOSS) PER COMMON SHARE
Total potentially dilutive securities	43,830